Samsung YP-NEU64B Manuel utilisateur

DIGITAL AUDIO PLAYER

YP-NDU

SERVICE

1. Precautions

2. Specifications

3. Location of Controls

4. Troubleshooting

5. Exploded View and Parts List

6. Block Diagram

7. PCB Diagrams

8. Schematic Diagrams

Manual

DIGITAL AUDIO PLAYER CONTENTS

ELECTRONICS

Printed in Korea

AH68-00759A

查询YP-NDUMP3供应商

Samsung Electronics 1-1

1. Precautions

1. Some semiconductor (“solid state”)devices are easily damaged by static electricity.

Such components are called Electrostatically Sensitive Devices(ESDs); Examples included

integrated circuits and Some filed-effect transistors. The following techniques will reduce

the occurrence of component damage caused by static electricity.

2. Immediately before handling any semiconductor components or assemblies, drain the electrostatic change

from your body by touching a known earth ground.

Alternatively, wear a discharging wrist-strap device. (Be sure to remove it prior to applring

Power-this is an electric shock precaution.)

3. After removing an ESD-equipped assembly, place it on a conductive surface such as aluminum

foil to prevent accumulation of electrostatic charge.

4. Do not use freon-propelled chemicals. These can generage electrical charges that damage ESDs.

5. Use only a grounded-tip soldering iron when soldering ESDs.

6. Use only anti-static solder removal device. Many solder removal devices are not rated as

“anti-static”; these can accumulate sufficient electrical charge to damage ESDs.

7. Do not remove a replacement ESDs from its protective package until you are ready to install it.

Most replacement ESDs are packaged with leads that are electrically shorted together by conductive materials.

8. Immediately before removing the protective material from the leads of a replacement ESDs,

touch the protective material to the chassis or circuit or assembly into which the device will

be installed.

9. Minimize body motions when handling unpackaged replacement ESDs. Motions such as

brusing clothes togetherer or lifting a foot from a carpeted floor can generate enough static

electricity to damage an ESDs.

Precautions

1-2 Samsung Electronics

MEMO

Samsung Electronics 2-1

2. Specifications

YP-NDU

12MHz, 16bit CISC

Built-in Memory 32MB/64MB

Two AAA-Size/8-hr or longer playing time (with alkaline batteries)

70x88x21mm(2.75”x3.46”x0.83”)/76g(2.68 Oz; without batteries)

Plastic /Aluminum

Up to 1.5Mbps

SmartMedia Card Socket

90dB(with A filter)

7mW

20Hz-20KHz

Model

Processor

Memory Capacity

Power

Battery

Dimensions (W x H x D)

Case

File Transmission Speed

Memory Socket

Noise Ratio

Earphone Output Power

Output Frequency Range

Specifications

2-2 Samsung Electronics

MEMO

Samsung Electronics 3-1

3. Location of Contols

3-1 Front Panel

3-2 Rear Panel

Stop/Power Off button

Volume control button

3D button

LCD

Voice Recorder button

Repeat button

Erase button

Mode/Section repeat

button

FF button

Equalizer button

REW button

Microphone

Connection cable

terminal

Power On

/Play

/Pause button

SmartMedia

Card Slot

Push open

button

Earphone jack

Eject

Hold switch

Battery case

Location of Controls

3-2 Samsung Electronics

3-3 Remote Controller

Volume control button

Power ON/Play/Pause

Stop/Power Off

button

Reverse

button

Forward

button EQ/REP button

Section repeat

button (A

Headphone/

Earphone port

Hold

Switch

LCD

Panel

3-4 FM Remote Controller

Power ON/Play/Pause button

Hold switch

Belt Clip

Volume control button

FF button

Stop/Power OFF button

Mode button

EQ/REP button

LCD panel

REW button

Section repeat

button (A B)

Front Rear

Samsung Electronics 4-1

4. Troubleshooting

Symptoms Possible Causes Check Point Action

No LCD

No Recording

Faulty recognition

of memory

Faulty switch

operation

Faulty down load

Faulty switch

operation

Faulty remote

control button

No Power Replace Main &

Sub board

Replace LCD

Replace Z1

Check Vcc5

Check TP4 (High)

Replace (U14)

Replace Main & Sub

Soldering

Replace Flash Memory

Soldering

Replace Switch

Replace main board

Soldering

Replace Switch

Replace remote control

Faulty LCD

Faulty Z1, U15, U14

- Open or Short PCB

- Faulty Flash Memory

- L3(3V)

- U1 Pin 3,13,35,80(3V)

- J1 PIn 1 (3V)

- U1 Pin 98 (Signal)

- C66 (Signal)

- U15 PIn 5(3V)

- U14 Pin 11,12,13 & TP3(Signal)

- Ports between U2 and memory

chip (smart media card socket)

- Mechanical parts

- Check TP1, TP2

- Open/Short test of switch

- Mechanical parts

- Check between U1 and U17

- Cold soldering on J6

- U14 Pin 6,16(3V)

- Cold soldering on switch

- Open PCB pattern

- Open or Short on switch

- Open PCB pattern - Open / Short test of switch

- Mechanical parts

- U1 Pin 17

- Faulty Remote control

- Cold soldering

- Open or Short on switch

- Faulty J6

Troubleshooting

4-2 Samsung Electronics

Check

Vcc3, Vcc4, Vcc5

>2.8V

Check TP4>2.8V

if TP4<2.8V

Replace Main

Board

Check C66

Analog Signal Cold Soldering Z1

Replace Z1

Check TP6

Analog Signal Replace U15

YES

NO NO

YES

Check TP3, 3MHz Check U16 -9

6MHz

YES

Replace

Sub Board

Replace

U16

Check

U14 -11,12,13

Digital Signal Replace

Mainboard

U14

REC

No Recording

Troubleshooting

Samsung Electronics 4-3

Check D3-1

>2.8V

Check

Y1(12MHz)

YES

Check

Power On Check LCD

Check KEY S1

Replace

Main Board

Check

between con7 and

U1-96,97,98,99

No LCD Display

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